Medical appliance



0. HENKER. MEDIC'AL \PPLIANCE. APPLICATION FILED APR.24 l9l3- 1 ,429,426. Paten t edsept. 19, 1922;. I

H 1 Fig-fif stares OTTO HENKER, OF JENA, GERMANY.

MEDICAL APPLIANCE.

Application filed April 24, 1913. Serial 1 To. 763,222.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3,1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that I, O'r'ro I'IENKER, a citizen of the German Empire, residing at Jena, Germany, have invented a new and useful Medical Appliance (for which I have filed an application in Germany Aug. 24:, 1912), of which the following is a specification.

The present invention relates to a tube, which is destined for the reception of a hysteroscope and is provided, so as to admit of lateral viewing with the aid of a suitable optical system, with a lateral observationwindow, this window being adapted to be disposed on one side of the instrument or to run right round it and also to be com-, bined with a central window, so as to form a transparent dome. While the well-known tubes of the above type were formed, as regards that part of them, which is intended to be introduced into the body, substantially of the same thickness throughout, in the new tube that zone, in which the said lateral window is located, has a greater circumference than the tube proper. By means of the new tube a clearer inspection than heretofore may be realized, since with it it is possible to exercise at that part of the uterus, where the thickened part of the tube is, an increased surface pressure on the wall of the uterus, so that the said wall will press closely to the window and yielding matter contained in the uterus, e. g., mucus, is forced to flow away from the window in the direction of the tubeaxis. Through the increased surface pressure hemorrhage, which usually occurs in the uterus during the examination, can be driven back at the place to be inspected, by which means only a thorough inspection of the uterus becomes at all possible. lVhen the thickening of the tube is made to project on one side of the said tube only,

it will be found convenient to place it, with a lateral observation-Window, on the same side as the said window In the annexed drawing: Fig. 1 shows a constructional example partly in axial section of the tube according to the invention. Fig. 2 is a oross-section along line 2.2

of Fig. 1. Fig. 3 shows a second example of the tube partly in axial section.

In Figs. 1 and 2 a tube a is fitted. on one side at that one of its ends, which is to be introduced into the body with an extension a which contains a' glazed window opening 6 In the extreme end of the tube there is disposed a second, central window opening 6 which is also closed by means of glass. The tube shown may therefore 1. In a tube for the re eption of a hysteroscope a lateral observation window,the zone of the tube, in which the said window is l0- cated, having a greater circumference than the tube proper.

2. In a tube for the reception of a hystero scope a lateral observation window at one side of the said tube, that part of the zone of the tube, in which the said window is located, projecting laterally beyond the tube proper.

OTTO HENKER. l/Vitnesses:

PAUL KRUGER, FRrrz SANDER. 

